Hi!
I'm wondering how I'd go about attaching multiple coefficients from a list to a function, while storing the output as a list.
An example of a simple case (the only one which I've been able to get to work) is as follows:
**for** j **from** 1 **by** 1 **to** 3 **to** f_j := j*sin(x) ** end do **
And then, when I want to manipulate the output, I have to handle each output element separately.
I also know how to attach a list of coefficients from a list, but handling an expression like
f_2*tan(23) = 2*tan(23)*x^2 is cumbersome and a bit silly, and not at all adequate for expressions with multiple terms.

I have to solve the nonlinear equation, i give the all indication, but the system also give the error to me. who can help me to solve this problem?
my equation is :
a[1]:=2:b[1]:=0.01:a[2]:=1:b[2]:=0.01:
a[0]:=1:b[0]:=0.01:a[3]:=1:b[3]:=0.01:v:=0.2:
RF:=diff(x[1](t),t)=a[0]+a[1]*x[1]+a[2]/(v-x[1])+a[3]*x[2]/(x[1]*(v-x[1])),diff(x[2](t),t)=b[0]+b[1]*x[1]+b[2]/(v+x[1])+b[3]*x[2]/(x[1]*(v-x[1]));
> ic:=x[1](0)=5,D(x[1])(0)=0,x[2](0)=1,D(x[2])(0)=0;x[1]*0.2=x[2];
> dsolve({RF,ic},x[1](t),x[2](t),type=numeric);
Error, (in dsolve/numeric/process_input) received more than one indication of the dependent vars [x[1](t), x[2](t)]

I've been at it a year, but this is my first attempt to write and use a package. I wrote a module with an exported package and tested it within the worksheet in which I wrote it. I defined the file path with _liblist and both the binary and the source file appeared where I wanted them. I cut and pasted the same path information in attempting to load the program. So I am wondering why it didn't load. I'm using Maple 10.03 on OS X 10.3.9.
**********************************************
file "MyMatrices"
**********************************************
MyMatrices := module()
description "routines for matrices";

> with('ScientificConstants');
> GetElement('Na');
...
atomicweight = ([value = 22.989770, uncertainty = 2.*10^(6(, units = u]),
...
So if I do the following, I expect 22.989770 (grams/mol)
> evalf(Element('Na',atomicweight));
-26
3.817543727 10
What is happening here? Why does "atomicweight" mean one thing in one context
and another in another?
Cheers
Geoff Russell

I am trying to familiarize myself with the functionality of the Maplet Builder, and I'm having some frustrating problems. Whenever I set a button to change the value of a MathML viewer, for the command, I use the statement MathML[Export](insert Maple statement here), and I receive an argument error. In addition, I was wondering if (while using the builder) there was a way to add some code that evaluates one or more Maple statements (i.e., variable definitions to be used by multiple Maplet components,etc.) that *does not* affect the value of any of the component properties. I'm used to using the GUI components in worksheet mode which seem to be more flexible in terms of programming actions for components (perhaps only because of my ignorance pertaining to the Maplet builder).

hi;
i have a system of 4 equations depending on each other, which cannot be solved explicitly. using the fsolve command reports a solution, however there must be whole bunch of possible quadruples.
i tried to fit the fsolve command in a loop, ignoring the previous solutions, without any success.
can anybody give me a hint on how to come up with the whole range of possible solution?

Dear all,
I evaluate a multiple integral (need to do 6 times). Maple cannot find analytical solution, so i try numerical as follows. But it still dind't give me a solution. Why? Is it because the function is too complex and too many integral?
Thanks a lot!
R := 250;
l := 1500;
e := 2000;
n := 5;
a := 100;
alpha := 2000;
beta := 2000;
h := (x,y,s,t,u,v)->(1/(pi*n*(a^2)))^3 * exp(-(1/(n*(a^2))*((x-alpha)^2+(y-beta)^2+(s-x)^2+(t-y)^2+(u-s)^2+(v-t)^2)));
Int(Int(Int(Int(Int(Int(h(x,y,s,t,u,v),x=0..2*R),y=0..l),s=e..2*R+e),t=0..l),u=2*e..2*R+2*e),v=0..l);
evalf(%);

When I try to get online help for the optimization package by executing the command:
?Optimization
I do not any information on the package at all. The info seems to be missing entirely. For example there is no online info on the LSSolve function.
Where is this info hidden? I'm using 10.04 (Mac).
Thanks.

Hire There:
I am trying to make a contourplot animation of the function u(x,y,t)=exp(-Pi*Pi*t)*sin(2*Pi*x)*sin(2*Pi*y),defined in [0,1]X[0,1]
I tried this
a := proc (t) densityplot(proc (x, y) options operator, arrow; exp((-1)*Pi*Pi*t)*sin(2*Pi*x)*sin(2*Pi*y) end proc, 0 .. 1, 0 .. 1, axes = frame, style = PATCHNOGRID, colorstyle = HUE, numpoints = 6400) end proc
display(seq(a(t), t = 0 .. 1), insequence = true, axes = framed);
but it seems that it is not working
I really appreciate your help

Can anybody tell me, How to use Dirac Matrices (Direct products of Pauli Matrices) in Maple?

This book entry describes a method,
using text files and *preprocessor macros*,
to measure the timing and memory usage of Maple procedures.
Attached are the source code and compiled library
for a small Maple package that does the actual measurements.

I would like to define
J=(y1-y10)^2+(y2-Y20)^2+k*(u1)^2+k*(u2)^2
where
y1 is a function of u1 and u2
y2 is a function of u1 and u2
then I need to diff(J,u1), diff(J,u1,u2)
Thank you for your support
Don

Hi guys,
I am trying to integrate the following expression:
u_ratio:=(4/omega_star)*(sin(omega*t)-(exp(-B)/sqrt(r_star))*sin(omega*t-B));
where
omega_star:=omega*r0^2/nu;
r_star:=r/r0;
B:=(1-r_star)*(sqrt(omega_star/2));
I would like to obtain integral of u_ratio with respect to r_star, and separately the integral of u_ratio over one period. When i try to use something like int(u_ratio,r_star) in only get back a large expression with an integral symbol still in it. What would be the best way to approach integrating this guy?
Thanks,
Randy

How to finding alpha(n) of this system equation
finding alpha(n) whan n=1..3
cos(alpha(1))+cos(alpha(2))+cos(alpha(3))=3*pi/4;
cos(5*alpha(1))+cos(5*alpha(2))+cos(5*alpha(3))=0;
cos(7*alpha(1))+cos(7*alpha(2))+cos(7*alpha(3))=0;
so..
i am basic maple user.herry herry.

After some experimenting I found that using AXESTICKS forced the use of POINTS (more or less) and PLOT. The problem is that I would like to draw a line instead of points.

I am trying to generate normal probability plots to be used for comparing different cases.

Ray